tune rrd to increase step and heartbeat (x2)

Question

I've got a bunch of rrds being updated every 5min

step = 300
ds[ExeTime].minimal_heartbeat = 600

I need to change this to every 15min.

rrdtool tune allows me to change the heartbeat but not the steps. Can I simply change the heartbeat to 1800? (900 = 15min .. then x2 for heartbeat) ??

Will this leave a bunch of holes making avg/max/etc off?

Answer 1

to change the step of your rrd file it has to be rewritten ... check out https://github.com/oetiker/rrdtool-rrdjig